Built for Beans, Peas, and Cover Crops That Fix More Than Just Nitrogen
Healthy Soil is the Foundation of Strong, Productive Legumes
Whether you're growing soybeans in the Midwest, alfalfa in the Southwest, chickpeas or lentils in the Northwest, or using clover or vetch in your cover crop rotation, legumes demand more from your soil than just basic fertility.
The TPSL Plant Natural® Soil Test for Legumes
is specifically tailored to the nutritional and biological needs of legume crops. Unlike generic soil tests, this analysis provides crop-specific insights—including micronutrients and trace elements critical to nodulation, nitrogen fixation, and balanced root-zone health.
Why Legume Growers Need a Specialized Test
Legumes don’t just feed themselves—they feed the soil. But to thrive, they still need:
Balanced micronutrients
like boron, zinc, iron, and manganese
Calcium, magnesium, and potassium
in the right ratios for strong nodulation and uptake
Molybdenum, a trace element essential for nitrogen-fixing enzymes
A properly managed Na:Ca and Na:Mg balance
to avoid stunting or salt-induced stress
This test provides real-world, plant-relevant data
you can use to dial in your nutrition, improve stand health, and support long-term soil function.
What’s Included in Your Analysis
Soil Health & Composition
Texture
pH
Carbonates (CO₃)
Electrical Conductivity (EC)
% Active Organic Matter
Macronutrients (H₂O & CO₂-extractable)
Nitrate-Nitrogen (NO₃-N)
Phosphate (P₂O₅)
Potassium (K)
Sodium (Na)
Calcium (Ca)
Magnesium (Mg)
Micronutrients & Trace Elements
Boron (B)
Zinc (Zn)
Iron (Fe)
Manganese (Mn)
Copper (Cu)
Molybdenum (Mo)
– vital for symbiotic nitrogen fixation
Soil Ratios
Sodium-to-Calcium (Na:Ca)
Sodium-to-Magnesium (Na:Mg)
Your Report Includes:
2-Page Color-Coded Lab Report Visual breakdown with severity levels, optimized for legume interpretation
Customized Recommendations Tailored for legume crops only, including soybeans, alfalfa, clovers, peas, lentils, vetch, chickpeas, and more
Plant Removal Rates Know what nutrients your crop will deplete—and how to replenish efficiently
Fertilizer Guidelines Targeted nutrient strategy to support both plant growth and soil nitrogen contribution
Sample Requirements
Sample Size: 3–4 cups
Sample Depth: Topsoil only (0–12 inches)
Turnaround Time: 5–7 business days from lab receipt
Sampling Kit: Not included. A clean quart-sized Ziploc bag works great.
Perfect For:
Commercial soybean and alfalfa growers
Farmers using legumes in cover cropping or rotation programs
Organic and regenerative operations focused on nitrogen cycling
Gardeners and small-scale growers cultivating peas, beans, or lentils
Ranchers managing forage legumes
for pasture
Why Use TPS Lab for Legume Soil Testing?
Extraction method simulates real plant-available nutrients
Designed for crop-specific performance, not generic fertilizer upsells
Backed by 80+ years of experience helping growers across the U.S.
Includes molybdenum testing, which many labs skip—but legumes require
Order the TPSL Plant Natural® Soil Test for Legumes Today
Support your legumes with a soil test as hardworking as they are. Get the targeted insights you need to boost yield, improve nodulation, and build better soil.
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